Lollapalooza will put 60,000 single-day tickets on sale Wednesday at 10 a.m. central for the festival Aug. 2-4 in Grant Park. The only question remaining is how fast they’ll sell out.

The festival’s entire lineup leaked weeks early last Wednesday, which moved up this week’s sale from the originally scheduled April 9, but it was almost beside the point. In less than three hours last week, the festival had already sold out 80,000 three-day passes at up to $235 per pass, said Charlie Jones, co-owner of Austin-based Lollapalooza promoters C3 Presents.

To coincide with the single-day sale (20,000 tickets at $95 for each day of the festival), Lollapalooza is announcing each day’s lineup Monday, including the Killers and Nine Inch Nails on Aug. 2, Mumford & Sons and the Postal Service on Aug. 3, and The Cure and Phoenix on Aug. 4 (a complete list of each day’s lineup is below).

Jones said the festival’s Web site is getting more than two times as many visitors as it did last year, indicating a rapidly growing interest in the festival. After signing a 10-year contract last year with the Chicago Park District that will keep Lollapalooza in Grant Park through 2022, Jones said daily capacity was capped at 100,000, which makes its daily attendance bigger than any destination rock festival in North America, including Coachella in California and Bonnaroo in Tennessee.

Jones also said there will be fewer visible tweaks to the festival this year than last, with the configuration of the eight stages remaining the same. Last year’s biggest test was the major storm that forced an evacuation of the festival at midafternoon Aug. 4. Grant Park was cleared of concertgoers before the storm hit, and the festival was able to resume a few hours later with only a few bands’ performances being canceled. But not all security personnel were clear on where to direct patrons as they exited the park; fans should have been directed to Grant Park parking garages for safety, but most ended up flooding downtown streets and buildings while waiting out the storm.

“It’s difficult to educate every single employee on all policies ahead of time,” Jones said. “It’s up to us to come up with better methods for communicating where people need to go,” whether it’s through the public address system, video screens or social media.